Wind turbine



FIG. 1 is a front view of a wind turbine in accordance with the new design;

FIG. 2 is an enlarged front view thereof, with portions of the blades and pole not shown fully;

FIG. 3 is a rear view thereof;

FIG. 4 is an enlarged rear view thereof, with portions of the blades and pole not shown fully;

FIG. 5 is a side view thereof; and,

FIG. 6 is an enlarged side view thereof, with portions of the blades and pole not shown fully. 

The ornamental design for wind turbine, as shown and described. 